$\frac{(\cos \theta + i \sin \theta)^4}{(\sin \theta + i \cos \theta)^5}$ का मान ज्ञात कीजिए,जहाँ $i = \sqrt{-1}$ है:

  • A
    $\cos \theta - i \sin \theta$
  • B
    $\cos 9 \theta - i \sin 9 \theta$
  • C
    $\sin \theta - i \cos \theta$
  • D
    $\sin 9 \theta - i \cos 9 \theta$

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